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Cisco Catalyst 3750 User Manual

Cisco Catalyst 3750
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2-413
Catalyst 3750 Switch Command Reference
OL-8552-07
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
pagp port-priority
pagp port-priority
Use the pagp port-priority interface configuration command to select a port over which all Port
Aggregation Protocol (PAgP) traffic through the EtherChannel is sent. If all unused ports in the
EtherChannel are in hot-standby mode, they can be placed into operation if the currently selected port
and link fails. Use the no form of this command to return to the default setting.
pagp port-priority priority
no pagp port-priority
Syntax Description
Defaults The default is 128.
Command Modes Interface configuration
Command History
Usage Guidelines The physical port with the highest priority that is operational and has membership in the same
EtherChannel is the one selected for PAgP transmission.
Note The switch supports address learning only on aggregate ports even though the physical-port keyword
is provided in the command-line interface (CLI). The pagp learn-method and the pagp port-priority
interface configuration commands have no effect on the switch hardware, but they are required for PAgP
interoperability with devices that only support address learning by physical ports, such as the
Catalyst
1900 switch.
When the link partner to the switch is a physical learner, we recommend that you configure the switch
as a physical-port learner by using the pagp learn-method physical-port interface configuration
command and to set the load-distribution method based on the source MAC address by using the
port-channel load-balance src-mac global configuration command. Use the pagp learn-method
interface configuration command only in this situation.
Examples This example shows how to set the port priority to 200:
Switch(config-if)# pagp port-priority 200
You can verify your setting by entering the show running-config privileged EXEC command or the
show pagp channel-group-number internal privileged EXEC command.
priority A priority number ranging from 0 to 255.
Release Modification
12.1(11)AX This command was introduced.

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Cisco Catalyst 3750 Specifications

General IconGeneral
Device TypeSwitch
Switching Capacity32 Gbps
Forwarding Rate38.7 Mpps
Stacking Bandwidth32 Gbps
RAM128 MB
Jumbo Frame SupportYes
Switch TypeManaged
ModelCatalyst 3750 Series
Uplink InterfacesSFP
Form FactorRack-mountable
MAC Address Table Size12, 000 entries
Routing ProtocolRIP, OSPF, EIGRP
Remote Management ProtocolSNMP, Telnet, HTTP
FeaturesLayer 3 switching, Layer 2 switching, auto-negotiation, BOOTP support, ARP support, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, traffic shaping, MAC address filtering, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco EnergyWise technology
Power over Ethernet (PoE)PoE
Operating Temperature-5 - 45 °C
Operating Humidity10% to 85% non-condensing

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